LG Range Error Code F6

F6 on an LG range means the upper oven temperature exceeded 650°F continuously for at least 2 minutes during a regular cooking cycle, not during self-cleaning. The control board triggers this fault as a safety measure to protect the oven and prevent a potential hazard. It typically points to a faulty temperature sensor, a stuck relay on the control board, or a wiring issue in the sensor circuit.

No, you should not continue using the oven while the F6 fault is active. The code indicates either a genuine overtemperature condition or a sensor or control board failure that could allow the oven to overheat without warning. Continued use under either condition carries a fire and damage risk, so the fault should be diagnosed and resolved before cooking again.

Repair costs depend on the failed component. An oven temperature sensor is typically the least expensive fix, with parts generally ranging from $20 to $60 and professional labor adding $80 to $150 or more depending on your area. A control board replacement is more costly, with parts often ranging from $100 to $300 or higher, plus labor. Getting a diagnosis from a qualified technician first can help avoid replacing the wrong part.

Some causes of F6 are DIY-friendly, such as checking and reseating the connector at CN60 or inspecting the wiring harness for visible damage. Testing the oven sensor resistance at pins 4 and 5 of CN60 requires a multimeter but is manageable for a confident DIYer. Replacing a control board with a stuck relay is also possible for someone comfortable with appliance disassembly, though working around high-voltage components always carries risk and should be approached carefully.

Resetting the range by unplugging it or tripping the breaker for a few minutes may temporarily clear the F6 code, but the fault will return if the underlying problem is not corrected. A faulty sensor, shorted wiring, or a stuck relay will trigger the code again as soon as the oven is used. A reset is useful for confirming the fault is persistent, but it is not a repair.